Probably plain so that when it is used for safety, the red visibility will be somewhat easier to spot. Hopefully if it is used, it will support a chest/head up position.Just cant seem to get them bigger…4x-7x. Guess us big boys are going to be weeded out one way or another…..96 Eyra/12 Mercury 175 Pro XS with 2015 single axle trailer2017 Victory Gunner